420854449 Power Valve Piston for Sea-Doo GSX LTD 951 1997-1999

Power Valve Piston for Sea-Doo

This power valve piston replaces OEM part 420854449 on select Sea-Doo GSX LTD 951 machines from 1997 to 1999, restoring proper exhaust valve movement in the 951 engine.

Overview

This power valve piston is a replacement component for the exhaust power valve system on the Sea-Doo GSX LTD 951. It helps the valve open and close as rpm changes so the engine breathes correctly through the exhaust port. This power valve piston suits riders maintaining a 1997 to 1999 GSX LTD 951 that needs fresh valve piston hardware.

Built For Performance

• Cross-references OEM part number 420854449 for easy matching
• Fits the power valve assembly on the 951 engine
• Restores valve movement for consistent exhaust timing
• Direct replacement for a worn or sticking power valve piston
• Suits 1997 to 1999 model year applications

Fits These Machines

• for Sea-Doo GSX LTD 951, 1997
• for Sea-Doo GSX LTD 951, 1998
• for Sea-Doo GSX LTD 951, 1999

On-The-Job Use

• Servicing power valve assemblies on 951 engines
• Rebuilding top end exhaust valve components
• Seasonal maintenance on 1997 to 1999 GSX LTD 951 machines
• Replacing a power valve piston that no longer moves freely

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, it is an aftermarket replacement that cross-references OEM part number 420854449. Always confirm your machine's serial number and existing part before ordering.

Q: How many power valve pistons come with this item? A: This listing covers one power valve piston. Check how many your engine requires, since the GSX LTD 951 power valve system uses more than one.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.